Electroless coating of Permalloy powder and DC-resistivity of alloy composites

Autores
Ozols, Andres; Pagnola, Marcelo Rubén; Iñaki García, D.; Sirkin, Hugo Ricardo Mario
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A high-resistivity coating of Permalloy (Ni?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.
Fil: Ozols, Andres. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Laboratorio de Sólidos Amorfos; Argentina
Fil: Pagnola, Marcelo Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Iñaki García, D.. Consejo Superior de Investigaciones Científicas; España
Fil: Sirkin, Hugo Ricardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Materia
Coated powders
Electroless plating
Soft magnetic composites
Permalloy
Powder metallurgy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/279576
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/279576
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Electroless coating of Permalloy powder and DC-resistivity of alloy compositesOzols, AndresPagnola, Marcelo RubénIñaki García, D.Sirkin, Hugo Ricardo MarioCoated powdersElectroless platingSoft magnetic compositesPermalloyPowder metallurgyA high-resistivity coating of Permalloy (Ni?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.Fil: Ozols, Andres. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Laboratorio de Sólidos Amorfos; ArgentinaFil: Pagnola, Marcelo Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; ArgentinaFil: Iñaki García, D.. Consejo Superior de Investigaciones Científicas; EspañaFil: Sirkin, Hugo Ricardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; ArgentinaElsevier Science SA2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/279576Ozols, Andres; Pagnola, Marcelo Rubén; Iñaki García, D.; Sirkin, Hugo Ricardo Mario; Electroless coating of Permalloy powder and DC-resistivity of alloy composites; Elsevier Science SA; Surface and Coatings Technology; 200; 24; 12-2006; 6821-68250257-8972CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0257897205011825info:eu-repo/semantics/altIdentifier/doi/10.1016/j.surfcoat.2005.10.028info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T12:57:45Zoai:ri.conicet.gov.ar:11336/279576instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-06 12:57:46.025CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Electroless coating of Permalloy powder and DC-resistivity of alloy composites
title Electroless coating of Permalloy powder and DC-resistivity of alloy composites
spellingShingle Electroless coating of Permalloy powder and DC-resistivity of alloy composites
Ozols, Andres
Coated powders
Electroless plating
Soft magnetic composites
Permalloy
Powder metallurgy
title_short Electroless coating of Permalloy powder and DC-resistivity of alloy composites
title_full Electroless coating of Permalloy powder and DC-resistivity of alloy composites
title_fullStr Electroless coating of Permalloy powder and DC-resistivity of alloy composites
title_full_unstemmed Electroless coating of Permalloy powder and DC-resistivity of alloy composites
title_sort Electroless coating of Permalloy powder and DC-resistivity of alloy composites
dc.creator.none.fl_str_mv Ozols, Andres
Pagnola, Marcelo Rubén
Iñaki García, D.
Sirkin, Hugo Ricardo Mario
author Ozols, Andres
author_facet Ozols, Andres
Pagnola, Marcelo Rubén
Iñaki García, D.
Sirkin, Hugo Ricardo Mario
author_role author
author2 Pagnola, Marcelo Rubén
Iñaki García, D.
Sirkin, Hugo Ricardo Mario
author2_role author
author
author
dc.subject.none.fl_str_mv Coated powders
Electroless plating
Soft magnetic composites
Permalloy
Powder metallurgy
topic Coated powders
Electroless plating
Soft magnetic composites
Permalloy
Powder metallurgy
dc.description.none.fl_txt_mv A high-resistivity coating of Permalloy (Ni?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.
Fil: Ozols, Andres. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Física. Laboratorio de Sólidos Amorfos; Argentina
Fil: Pagnola, Marcelo Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Iñaki García, D.. Consejo Superior de Investigaciones Científicas; España
Fil: Sirkin, Hugo Ricardo Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
description A high-resistivity coating of Permalloy (Ni?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.?17.81Fe?1.97Mo wt.%) powders for soft magnetic composites, SMC, was developed and characterized. The coating was made using the electroless plating method employing an aqueous solution of sodium and nickel phosphates. The chemical process led to the formation of a layer up to 1 ìm thick deposited on each particle surface and composed of a mixture of Ni(OH)2, P2O5 and NaPO3 compounds, as shown by X-ray photoelectron spectrometry and X-ray powder diffraction studies. The effect of coating on electrical DC resistivity was evaluated on SMC obtained mixing the metal, coated or uncoated, and thermoplastic polymer PEEK (polyetheretherketone) powders,pressing the mixture at 800 MPa and heating in air up to melting the polymer (380?410 °C). The SMC made with coated powders showed an increasein resistivity of more than two orders of magnitude compared to that obtained with uncoated powders when the polymer ranged between 0.5 and 1.5wt.%. This difference prevails in comparison with sintered materials processed at the same pressure and sintering in hydrogen at 1350 °C. Thus, thisprocess would restrict the eddy currents which affect the performance of soft magnetic products for AC applications.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/279576
Ozols, Andres; Pagnola, Marcelo Rubén; Iñaki García, D.; Sirkin, Hugo Ricardo Mario; Electroless coating of Permalloy powder and DC-resistivity of alloy composites; Elsevier Science SA; Surface and Coatings Technology; 200; 24; 12-2006; 6821-6825
0257-8972
CONICET Digital
CONICET
url http://hdl.handle.net/11336/279576
identifier_str_mv Ozols, Andres; Pagnola, Marcelo Rubén; Iñaki García, D.; Sirkin, Hugo Ricardo Mario; Electroless coating of Permalloy powder and DC-resistivity of alloy composites; Elsevier Science SA; Surface and Coatings Technology; 200; 24; 12-2006; 6821-6825
0257-8972
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0257897205011825
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.surfcoat.2005.10.028
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.106097

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